# Anduril MASC Autonomous Warship Program The **Modular Attack Surface Craft (MASC)** program is [[Anduril]]'s entry into the [[United States Navy]]'s push for a fleet of unmanned surface vessels. Announced in November 2025, it pairs Anduril's autonomy and mission systems with hulls and production scale from South Korea's [[HD Hyundai Heavy Industries]]. It is the **maritime leg** of Anduril's product line — distinct from its air ([[Anduril Fury]]), land, and counter-UAS programs — and the reason the company rebuilt a historic Seattle shipyard as a U.S. production hub. > **Program status, not a booked contract.** As of mid-2026 this is a Navy program line with a partnership and a first prototype under construction — not a disclosed-value production award. Treat it as a program to track for a production decision, not as obligated revenue. ## Structure Anduril supplies the open-architecture autonomy stack (built around [[Anduril Lattice]]) and integrates interchangeable payloads; [[HD Hyundai Heavy Industries]] supplies the vessel and heavy-manufacturing capacity. The design is pitched on **modularity and speed of production** — one hull reconfigurable across intelligence, surveillance, strike, and electronic-warfare missions through swappable payloads. The **first prototype is being built in Korea** using Hyundai's yards, a stage meant to prove the design before production moves to the United States. The U.S. production site is the revamped **Foss Shipyard** on Seattle's Lake Washington Ship Canal, where Anduril spent tens of millions on its initial hub for low-rate assembly, integration, and testing. Seattle also houses Anduril's **connected warfare** division headquarters; the company was adding office space downtown and had 100+ open regional roles, more than half in software. ## Significance MASC is the clearest maritime instance of a repeating Anduril template: **the company brings the autonomy, an allied heavy-industry partner brings the platform.** It mirrors the Australian [[Anduril Ghost Shark]] extra-large AUV program almost exactly — same division of labor, different domain (surface vs. undersea) and different partner (Hyundai vs. an Australian build-out). Reading the two together makes the pattern legible: Anduril is positioning as the autonomy layer across every unmanned domain, letting established manufacturers carry the capital-intensive hardware. It also embeds a foreign shipbuilder inside a U.S. Navy program at a moment when American shipbuilding capacity is a recognized strategic bottleneck — a politically notable structure worth tracking for domestic-content and Jones Act–adjacent friction as it moves toward production. ## Open questions to track - Does MASC convert from prototype/partnership into a disclosed-value **production award**, and at what quantity? - How much of the build ultimately happens at Foss Shipyard (Seattle) vs. in Korea — the domestic-content question? - How does MASC relate to the Navy's broader unmanned-surface-vessel program of record and competing bidders? ## See Also - [[Anduril]] - [[HD Hyundai Heavy Industries]] - [[United States Navy]] - [[Anduril Lattice]] - [[Anduril Ghost Shark]] - [[Anduril Contracts]] - [[Anduril Events]] - [[Deals Hub]]